/****************************************************************************
 *
 * Copyright 2016 Samsung Electronics All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific
 * language governing permissions and limitations under the License.
 *
 ****************************************************************************/
/****************************************************************************
 * netutils/netlib/netlib.c
 * Various uIP library functions.
 *
 *   Copyright (C) 2007, 2009, 2011 Gregory Nutt. All rights reserved.
 *   Author: Gregory Nutt <gnutt@nuttx.org>
 *
 * Based on uIP which also has a BSD style license:
 *
 *   Author: Adam Dunkels <adam@sics.se>
 *   Copyright (c) 2004, Adam Dunkels and the Swedish Institute of
 *   Computer Science.
 *   All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <debug.h>

#include <apps/netutils/netlib.h>

/****************************************************************************
 * Public Functions
 ****************************************************************************/

bool netlib_ipaddrconv(const char *addrstr, uint8_t *ipaddr)
{
	unsigned char tmp;
	char c;
	unsigned char i;
	unsigned char j;

	tmp = 0;

	for (i = 0; i < 4; ++i) {
		j = 0;
		do {
			c = *addrstr;
			++j;
			if (j > 4) {
				return false;
			}
			if (c == '.' || c == 0) {
				*ipaddr = tmp;
				++ipaddr;
				tmp = 0;
			} else if (c >= '0' && c <= '9') {
				tmp = (tmp * 10) + (c - '0');
			} else {
				return false;
			}
			++addrstr;
		} while (c != '.' && c != 0);
	}

	return true;
}

bool netlib_hwmacconv(const char *hwstr, uint8_t *hw)
{
	unsigned char tmp;
	char c;
	unsigned char i;
	unsigned char j;

	if (strlen(hwstr) != 17) {
		return false;
	}

	tmp = 0;

	for (i = 0; i < 6; ++i) {
		j = 0;
		do {
			c = *hwstr;
			++j;
			if (j > 3) {
				return false;
			}

			if (c == ':' || c == 0) {
				*hw = tmp;
				nvdbg("HWMAC[%d]%0.2X\n", i, tmp);
				++hw;
				tmp = 0;
			} else if (c >= '0' && c <= '9') {
				tmp = (tmp << 4) + (c - '0');
			} else if (c >= 'a' && c <= 'f') {
				tmp = (tmp << 4) + (c - 'a' + 10);
			} else if (c >= 'A' && c <= 'F') {
				tmp = (tmp << 4) + (c - 'A' + 10);
			} else {
				return false;
			}

			++hwstr;
		} while (c != ':' && c != 0);
	}

	return true;
}
